EP1859166A2 - Pompe magnetique sans support - Google Patents

Pompe magnetique sans support

Info

Publication number
EP1859166A2
EP1859166A2 EP06738558A EP06738558A EP1859166A2 EP 1859166 A2 EP1859166 A2 EP 1859166A2 EP 06738558 A EP06738558 A EP 06738558A EP 06738558 A EP06738558 A EP 06738558A EP 1859166 A2 EP1859166 A2 EP 1859166A2
Authority
EP
European Patent Office
Prior art keywords
magnetic
casing
fluid pump
propeller
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06738558A
Other languages
German (de)
English (en)
Other versions
EP1859166B1 (fr
EP1859166A4 (fr
Inventor
Justin Lawyer
Patrick Clasen
Timothy Marks
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ecotech LLC
Original Assignee
Ecotech Marine LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ecotech Marine LLC filed Critical Ecotech Marine LLC
Publication of EP1859166A2 publication Critical patent/EP1859166A2/fr
Publication of EP1859166A4 publication Critical patent/EP1859166A4/fr
Application granted granted Critical
Publication of EP1859166B1 publication Critical patent/EP1859166B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/027—Details of the magnetic circuit
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/047—Liquid pumps for aquaria
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/026—Units comprising pumps and their driving means with a magnetic coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • the present invention relates to fluid pump assemblies in general, and more L 0 particularly to a fluid pump that is magnetically supported in position and in which a driving force is transmitted to an propeller through the medium of magnetic force.
  • the second role of circulation is related to the nature of the inhabitants of a reef aquarium. Because many reef inhabitants are sessile (they do not move), circulation is the only means by which nutrients such as food and oxygen are brought to these animals and the only means by which waste is expelled. In the ocean, corals and other sessile animals have the benefit of large waves crashing into the reef in a random but consistent fashion. Within the constraints of a glass box or aquarium, a pump is used as a substitute.
  • L 0 designs utilize a mechanical bracket which hangs over the top of the aquarium in order to support the pump within the aquarium.
  • brackets are used to support and align the rotating component within the aquarium. The prior designs are unsatisfactory because they are bulky due to the motor being placed within the aquarium
  • the present invention attempts to remedy these drawbacks and provides a fluid pump assembly adapted to be mounted to an aquarium without the use of mechanical aids, such as
  • the disclosed pump can be located anywhere on the surfaces of the aquarium, thus maximizing the aesthetic effects of the aquarium and facilitating water circulation by allowing the pump to located at a location achieved optimized fluid flow based upon the interior characteristics of the aquarium.
  • the present invention provides a fluid pump assembly for use in a fluid container. 5
  • a fluid pump kit comprising a first magnetic assembly operatively associated with a drive motor, a second magnetic assembly operatively associated with an propeller, a first casing supporting the first magnetic assembly, a second casing supporting the second magnetic assembly, and a nonmagnetic spacer separating the first and second magnetic assemblies.
  • the propeller are magnetically coupled to each other by the first and second magnetic assemblies through the spacer for drivingly coupling the drive motor to the propeller.
  • the first and second casings are detachably held together solely by clamping the spacer from opposite sides thereof by a magnetic attraction force between the first and second magnetic assemblies.
  • a fluid pump assembling used in combination with a container having a wall for holding an amount of fluid.
  • the pump assembly comprises a first casing disposed outside the container in contact with a first side of the wall of the container, a first magnetic assembly mounted to the first casing and operatively associated with a drive motor, a second casing disposed inside the
  • the first magnetic assembly includes a rotatable magnetic drive member drivingly coupled to the drive motor and spaced from the wall outside the container, while the magnetic drive member is magnetically coupled to the magnetic driven member through the wall for imparting a rotary driving force to the propeller in response to operation of the drive motor.
  • each of the first and second casings is detachably connected to the associated side of the wall of the container solely by magnetic attraction force between the first and second magnetic assemblies.
  • the invention furthermore includes a method of circulating water within an aquarium.
  • a first casing having a first rotatable magnetic member coupled to a source of rotary motion is provided.
  • a second casing having an propeller coupled to a second rotatable magnetic member is provided.
  • a container having a fluid therein is provided.
  • the first casing is positioned on an exterior wall of the container and the second casing is positioned on an interior wall of the container within the fluid in coaxial alignment with the first casing.
  • the casings remain in alignment as a result of magnetic attraction between the rotatable magnetic member
  • the source of rotary motion is operated and thereby causes the first rotatable magnetic member to rotate for thereby causing cooperating rotation of the second rotatable magnetic member and of the propeller.
  • Fig. 1 is a sectional view of a fluid pump kit including a fluid pump assembly according to a first exemplary embodiment of the present invention
  • Fig. 2 is a sectional view of a fluid pump kit including a fluid pump assembly
  • Fig. 3 is a sectional view of the fluid pump assembly according to the first exemplary
  • Fig. 4 is a sectional view of the alternative embodiment of the combination of the
  • Fig. 5 is a sectional view of the fluid pump assembly according to the second
  • L 0 Fig. 6 is a sectional view of the alternative embodiment of the combination of the
  • Fig. 7 is a perspective view of the fluid pump assembly.
  • Fig. 1 depicts a fluid pump kit 8 comprising a fluid pump assembly according to a first exemplary embodiment of the present invention, generally depicted with the reference numeral 10, in the form of a kit.
  • the fluid pump assembly 10 comprises a first casing 12 housing a first magnetic assembly 14 operatively associated with a drive motor 18, and a second casing 32 housing a second magnetic assembly 34 operatively associated with an propeller 38.
  • the fluid pump kit 8 further comprises a non-magnetic spacer 42 separating the first and second magnetic assemblies 14 and 34, respectively.
  • the non-magnetic spacer 42 has a first side 42a and a second side 42b oriented opposite and substantially parallel to each other.
  • the first side 42a of the spacer 42 is in contact with the first casing 12, while the second side 42b is in contact with the second casing 32.
  • a material such as ABS, Teflon or ultra high molecular weight polyethylene (UHMW) is suitable for both first and second casings.
  • the spacer 42 may be rubber or other non-magnetic polymer and has a thickness of approximately 0.5 inches.
  • the first magnetic assembly 14 includes a magnetic drive member 16 mounted within the first casing 12 for rotation about an axis 17 and drivingly coupled to the electric drive motor 18 by a drive shaft 20.
  • the drive shaft 20 is coaxial to the axis 17.
  • the magnetic drive member 16 has at least one pair of magnetic poles (N) and (S).
  • the magnetic drive member 16 is in the form of circular disk and has a plurality of pairs of magnetic poles (N) and (S).
  • the magnetic poles (N) and (S) are oriented in a two-dimensional array, such as radially along the disc 16.
  • the magnetic drive member 16 is made from neodymium or any other high performance magnetic material offering low physical volume and high magnetic flux.
  • the drive motor 18 may be of any appropriate type, such as hydraulic, electric, etc.
  • the drive motor 18 is an electric motor (either AC motor or DC motor).
  • a suitable cover 19 made of magnetically permeable material, such as steel is attached to and covers a side of the magnetic drive member 16 facing the drive motor 18 (motor side) to shield the electric motor 18 from magnetic flux, as this would otherwise cause the electric motor 18 to be less effective at producing torque, by diminishing the magnetic field within the electric motor 18 itself.
  • the electric motor 18, as illustrated in Fig. 1, is attached to a power source 22 separate from the first casing 12 through electric wires 23.
  • the electric motor 18 may also be powered by a battery (not shown) attached to the electric wires 23.
  • the electric motor 18 has a bearing (not shown) suitably sufficient to tolerate axial load applied to the drive shaft 20.
  • axial load on the drive shaft 20 may be accommodated by a separate bearing assembly (not shown) attached to the first casing 12 and interposed around the drive shaft 20 between the electric motor 18 and the magnetic drive member 16.
  • the first casing 12 is situated against the first side 42a of the non-magnetic spacer 42, and the magnetic drive member 16 is mounted in the first casing 12 so that the axis 17 of rotation of the drive shaft 20 of the electric motor 18 is substantially perpendicular to the first side 42a of the spacer 42.
  • the magnetic drive member 16 is disposed adjacent to the spacer 42 and is axially spaced from the first side 42a thereof with a small gap 24.
  • the second magnetic assembly 34 includes a driven member 36 formed from a magnetic material, such as neodymium, mounted within the second casing 32 for rotation about an axis 37 and drivingly coupled to the propeller 38 by a driven shaft 40. hi other words, the driven shaft 40 is coaxial to the axis 37.
  • the magnetic driven member 36 has at least one pair of magnetic poles (N) and (S).
  • the magnetic driven member 36 is in the form of circular disk and has a plurality of pairs of magnetic poles (N) and (S).
  • the magnetic drive member 16 is substantially identical to the magnetic driven member 36.
  • a steel shield 35 is disposed on and covers the distal surface of drive member 36. The shield 35 short circuits the magnetic flux of driven member 36 and thereby increases the efficiency of pump assembly 10.
  • the second casing 32 is situated against the second side 42b of the non-magnetic spacer 42, and the magnetic driven member 36 is mounted in the first casing 12 so that the axis 17 of rotation of the driven shaft 40 is substantially perpendicular to the second side 42b of the spacer 42.
  • the axis 17 of the magnetic drive member 16 and the axis 37 of magnetic driven member 36 are substantially coaxial, hi other words, the electric motor 18 and the propeller 38 are magnetically coupled to each other by the magnetic drive member 16 and the magnetic driven member 36 through the spacer 42 so as to drivingly couple the drive motor 18 to the propeller 38.
  • the magnetic driven member 36 is disposed adjacent to the spacer 42 and is axially spaced from the second side 42b thereof with a small gap 39.
  • the mounting of the magnetic driven member 36 and the propeller 38 in the second casing 32 includes a bearing 41 of suitable material properties to support the driven shaft 40, transmit to the second casing 32 the clamping forces caused by the first and second magnetic assemblies 14 and 34, and minimize the friction of rotation.
  • the bearing 41 should be a plastic composition, Teflon or UHMW with a suitably hard and smooth mating surface, such as made from metal or ceramic material.
  • a protective screen 33 is attached to the second casing 32 around the propeller 38 to allow
  • the first casing 12 housing the first magnetic assembly 14, and the second casing 32 housing the second magnetic assembly 34 are detachably held together by magnetic attraction between the first and second magnetic assemblies 14 and 34, respectively.
  • the magnetic attraction is very high.
  • the spacer 42 which may be made from rubber or some other materials
  • .0 non-magnetic polymer has sufficient thickness to reduce the attractive force between the magnetic assemblies 14, 34 sufficient to allow the casings 12,32 to be separated prior to installation. More specifically, the magnetic drive member 16 and the magnetic driven member 36 generate sufficient magnetic attraction therebetween to clamp the first casing 12 and the second casing 32 against the spacer 42 with sufficient force to support both casings
  • the magnetic drive member 16 drivingly coupled thereto through rotor 20 is rotated, thereby causing the magnetic driven member 36 to rotate due to the attractive magnetic forces between opposing poles on the magnetic driven member 36 and the magnetic drive member 16.
  • Fig. 2 of the drawings illustrates a second exemplary embodiment of a fluid pump kit, generally depicted with the reference numeral 50.
  • Components, which are unchanged from, or function in the same way as in the first exemplary embodiment depicted in Fig. 1 are labeled with the same reference numerals, sometimes without describing detail since similarities between the corresponding parts in the two embodiments will be readily perceived by the reader.
  • the fluid pump kit 50 corresponds substantially to the fluid pump kit 8 of Fig. 1 with the exception of the first and second magnetic assemblies that will therefore be explained in detail below.
  • the fluid pump kit 50 in accordance with the second exemplary embodiment of the present invention comprises a fluid pump assembly 52 including a first casing 12 housing a first magnetic assembly 54 operatively associated with drive motor 18, and a second casing 32 housing a second magnetic assembly 56 operatively associated with an propeller 38.
  • the fluid pump kit 50 further comprises a non-magnetic spacer 42 separating the first and second magnetic assemblies 54 and 56, respectively.
  • the first magnetic assembly 54 includes a rotatable magnetic drive member 16 and at least one annularly oriented first clamping magnet 55.
  • the magnetic drive member 16 is mounted within the first casing 12 for rotation about axis 17 and is drivingly coupled to the drive motor 18 by a drive shaft 20.
  • the first clamping magnet 55 is secured to the periphery of first casing 12 and preferably has a planar outer surface coplanar with the associated end surface of casing 12.
  • the first clamping magnet 55 includes a plurality of first peripherally spaced clamping magnets 55 embedded into an inner face 12a of the first casing 12 facing the first side 42 a of the spacer 42.
  • the first clamping magnets may be adhesively secured within a series of corresponding slots formed in casing 12.
  • the second magnetic assembly 56 includes a rotatable magnetic driven member 36 and at least one second clamping magnet 57.
  • the magnetic driven member 36 is mounted within the second casing 32 for rotation about an axis 37 and is drivingly coupled to the propeller 38 by a driven shaft 40.
  • the at least one second clamping magnet 57 is secured to the periphery of second casing 32.
  • the second clamping magnet 57 includes a plurality of peripherally spaced second clamping magnets 57 embedded into an inner face 32a of the second casing 32 facing the second side 42b of the spacer 42 in order to have an outer surface coplanar with the associated inner face 32a.
  • the first casing 12 housing the first magnetic assembly 54, and the second casing 32 housing the second magnetic assembly 56 are detachably held together solely by clamping the spacer 42 from opposite sides thereof by magnetic attraction between the first and second clamping magnets 55 and 57, respectively. More specifically, the first and second clamping magnets 55 and 57 provide the magnetic attraction force therebetween strong enough to clamp the first casing 12 and the second casing 32 against the spacer 42 with sufficient force to support both casings against gravity without the use of mechanical aids.
  • the magnetic drive member 16 drivingly coupled thereto is rotated, thereby causing the magnetic driven member 36 to rotate due to the attractive magnetic forces between opposing poles on the magnetic driven member 36 and the magnetic drive member 16 passing through the spacer 42, as shown in Fig. 1.
  • the first and second clamping magnets 55 and 57 are magnetically stronger and physically larger than the magnets of the drive member 16 and the driven member 36.
  • the mass of the rotating drive member 16 and the driven member 36 are less, requiring a smaller motor to operate the pump assembly. Additionally, in that event, the drive train experiences less torque, particularly at start-up, places less load upon the bearings, and thus achieves a more efficient use of power.
  • one of the clamping magnets 55 and 57 maybe a metal member made of a ferromagnetic material.
  • FIG. 3 depicts the fluid pump assembly 10 in accordance with the first exemplary embodiment of the present invention, used in combination with a container 2 provided for holding an amount of fluid 7, such as liquid.
  • the container 2 may be of any appropriate form, such as an aquarium.
  • the container 2 comprises a bottom wall 4 and a side wall 6 extending substantially vertically upwardly from the bottom wall 4.
  • the side wall 6 of the container 2 has a first side 6a and a second side 6b oriented opposite and substantially parallel to each other.
  • the fluid pump assembly 10 comprises a first casing 12 disposed outside the container 2 and housing a first magnetic assembly 14 operatively associated with a drive
  • a material such as ABS, Teflon or ultra high molecular weight polyethylene (UHMW) may be used for both first and second casings.
  • a protective shroud 33 is attached to the second casing 32 around the propeller 38 to prevent aquarium inhabitants from contacting the
  • Each of the first and second magnetic assemblies 14 includes a magnetic member (16 or 36) having at least one pair of magnetic poles (N) and (S).
  • the magnetic drive member 16 is in the form of circular disk and has a plurality of pairs of magnetic poles (N) and (S).
  • the magnetic poles (N) and (S) are oriented in a two-dimensional array, such as radially along the disc 16.
  • the magnetic drive member 16 is made from neodymium or any other high performance magnetic material offering low physical volume and high magnetic flux.
  • the magnetic members may be electro-magnets (not shown).
  • electro-magnets there would be no moving parts on the outside of the container 2, and a sensing device, such as Hall effect sensors, could be used to determine the direction of movement of the magnetic material on the inside of the container 2.
  • a microprocessor could be used to alternate current in such a way that speed of the propeller 38 is controllable.
  • the first casing 12 and the second casing 32 are detachably held together solely by clamping the side wall 6 of the container 2 from opposite sides thereof by a magnetic attraction force between the magnetic drive member 16 and the magnetic driven member 36.
  • a support structure such as a bracket member 15, may be used to support the heavier first casing 12 in the event that the drive motor 18 is too heavy, such as if an AC induction motor were instead of a brushless DC motor.
  • the second casing 32 is detachably connected to the first side 6b of the side wall 6 of the container 2 solely by the magnetic attraction between the magnetic drive member 16 and the magnetic driven member 36.
  • the rotation of the drive motor 18 causes corresponding rotation of the propeller 38 due to the magnetic coupling between the magnetic drive member 16 and the magnetic driven member 36.
  • the first casing 12 and the second casing 32 automatically come into coaxial alignment by virtue of the magnetic attraction provided by the magnetic assemblies 14 and 34 communicating magnetically with each other.
  • the first casing 12 and the second casing 32 are prevented from rotating and held against gravity by means of at least one first friction member 44 attached to an inner face 12a of the first casing 12 facing the first side 6a of the side wall 6 of the container 2, and at least one second friction member 46 attached to an outer face 12b of the second casing 32 facing the second side 6b of the side wall 6 of the container 2.
  • Fig. 5 depicts the fluid pump assembly 10 in accordance with the second exemplary embodiment of the present invention, used in combination with the container 2.
  • the fluid pump assembly 52 comprises a first casing 12 disposed outside the container 2 and housing a first magnetic assembly 54 operatively associated with a drive motor 18, and a second casing 32 disposed inside the container 2 submersed within the liquid 7 and housing a second magnetic assembly 56 operatively associated with an propeller 38.
  • the first magnetic assembly 54 includes a rotatable magnetic drive member 16 and at least one first clamping magnet 55.
  • the magnetic drive member 16 is mounted within the first casing 12 for rotation about an axis 17 and drivingly coupled to the drive motor 18 by a drive shaft 20.
  • the at least one first clamping magnet 55 is secured to the first casing 12.
  • the at least one first clamping magnet 55 includes a plurality of first clamping magnets 55 at least partially imbedded into an inner face 12a of the first casing 12 facing the first side 6a of the side wall 6 of the container 2.
  • the second magnetic assembly 56 includes a rotatable magnetic driven member 36 and at least one second clamping magnet 57.
  • the magnetic driven member 36 is mounted within the second casing 32 for rotation about an axis 37 and drivingly coupled to the propeller 38 by a driven shaft 40.
  • the at least one second clamping magnet 57 is secured to the second casing 32.
  • the at least one second clamping magnet 57 includes a plurality of second clamping magnets 57 at least partially imbedded into an inner face 32a of the second casing 32 facing the second side 6b of the side wall 6.
  • one of the clamping magnets 55 and 57 may be a metal member made of a ferromagnetic material.
  • the first casing 12 housing the first magnetic assembly 54, and the second casing 32 housing the second magnetic assembly 56 are detachably held together solely by clamping the side wall 6 of the container 2 from opposite sides thereof by magnetic attraction between the first and second clamping magnets 55 and 57, respectively. More specifically, the first and second clamping magnets 55 and 57 provide sufficient magnetic attraction therebetween to clamp the first casing 12 and the second casing 32 against the side wall 6 of the container 2 with sufficient force to support both casings 12 and 32 against gravity without the use of mechanical aids.
  • a support structure such as a bracket member 15, maybe used to support the heavier first casing 12 in the event that the drive motor 18 is too heavy, such as if an AC induction motor were used instead of a brushless DC motor.
  • the second casing 32 is detachably connected to the fist side 6b of the side wall 6 of the container 2 solely by the magnetic attraction force between the magnetic drive member 16 and the magnetic driven member 36.
  • the rotation of the drive motor 18 causes corresponding rotation of the propeller 38 due to the magnetic coupling between the magnetic drive member 16 and the magnetic driven member 36.
  • the first and second clamping magnets 55 and 57 are magnetically stronger and physically larger than the magnets of the drive member 16 and the driven member 36.
  • the mass of the rotating drive member 16 and the driven member 36 are less, requiring a smaller motor to operate the pump assembly and places less load upon the bearings and thus achieves a more efficient use of power.
  • the first casing 12 and the second casing 32 automatically come into alignment, also by means of the magnetic forces provided by the magnetic assemblies 14 and 34 communicating magnetically with each other.
  • the first casing 12 and the second casing 32 are prevented from rotating and against gravity by means of at least one first friction member 44 attached to an inner face 12a of the first casing 12 facing the first side 6a of the
  • the friction members 44 and 46 are made from material with a relatively high friction coefficient and preferably are made of a resilient material.
  • a series of slots 100 extend longitudinally along casing 32
  • the net magnet attraction should be at least 1.0 pound, preferably at least 2.5 pounds and more preferably 4.5 pounds, in order to hold the casings in position
  • the net magnetic attraction is the magnetic attraction attributable to the magnetic members 14, 34 and 55,57.
  • the size of magnetic members and their magnetic strength may be reduced if the magnetic attraction between the clamping magnetic members 55,57 is increased. Reduced weight of magnetic members 14, 34 will allow a relatively small motor 18 to be utilized.
  • the current invention describes a novel fluid pump kit and a fluid pump assembly in combination with a container providing a 5 magnetic drive coupling between a drive motor and an propeller of the pump assembly and detachably connected to a wall of the container solely by magnetic attraction force between first and second magnetic assemblies of the fluid pump assembly.
  • the present invention provides a number of advantages over the prior art, such as:
  • Rotating magnetic driven member drives an propeller by which flow is outputted perpendicular to the vertical barrier without redirection.
  • a drive motor is external to the liquid, eliminating the addition of heat to the container, such as aquarium, through the pump.
  • L 5 - Rotating magnetic members feature at least two poles oriented in a two- dimensional array, such as radially along a disc.
  • Rotating parts are held a small distance away from the wall between the two halves of the fluid pump assembly through the use of bearings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

Selon l'invention, un ensemble pompe est utilisé en combinaison avec un contenant présentant une paroi. L'ensemble pompe comprend un premier corps disposé à l'extérieur du contenant en contact avec la paroi, un premier ensemble magnétique monté sur le premier corps et associé fonctionnel à un moteur d'entraînement, un second corps disposé à l'intérieur du contenant en contact avec la paroi, ainsi qu'un second ensemble magnétique monté sur le second corps et associé fonctionnel à une hélice. Le premier ensemble magnétique comprend un élément d'entraînement magnétique rotatif couplé en relation d'entraînement au moteur d'entraînement. L'élément d'entraînement magnétique est couplé magnétiquement à l'élément d'entraînement magnétique à travers la paroi afin de conférer une force d'entraînement rotative du moteur d'entraînement à l'hélice. En outre, le second corps est relié détachable au second côté de la paroi du contenant uniquement par la force d'attraction magnétique entre les premier et second ensembles magnétiques.
EP06738558.3A 2005-03-16 2006-03-16 Pompe magnetique sans support Active EP1859166B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66277105P 2005-03-16 2005-03-16
PCT/US2006/009517 WO2006101976A2 (fr) 2005-03-16 2006-03-16 Pompe magnetique sans support

Publications (3)

Publication Number Publication Date
EP1859166A2 true EP1859166A2 (fr) 2007-11-28
EP1859166A4 EP1859166A4 (fr) 2013-05-29
EP1859166B1 EP1859166B1 (fr) 2016-01-13

Family

ID=37024382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06738558.3A Active EP1859166B1 (fr) 2005-03-16 2006-03-16 Pompe magnetique sans support

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US20170114786A1 (en) 2017-04-27
US20160010647A1 (en) 2016-01-14
US10047750B2 (en) 2018-08-14
US10662951B2 (en) 2020-05-26
US10975870B2 (en) 2021-04-13
CA2633002C (fr) 2011-03-01
US7785081B2 (en) 2010-08-31
US20100322797A1 (en) 2010-12-23
EP1859166B1 (fr) 2016-01-13
US9140264B2 (en) 2015-09-22
US20200355186A1 (en) 2020-11-12
US11635079B2 (en) 2023-04-25
US7393188B2 (en) 2008-07-01
US20210231124A1 (en) 2021-07-29
US20060210412A1 (en) 2006-09-21
WO2006101976A3 (fr) 2008-01-03
EP1859166A4 (fr) 2013-05-29
US8197232B2 (en) 2012-06-12
US20120251360A1 (en) 2012-10-04
CA2633002A1 (fr) 2006-09-28
US20140271281A1 (en) 2014-09-18
US20180372105A1 (en) 2018-12-27
US9534602B2 (en) 2017-01-03
WO2006101976A2 (fr) 2006-09-28
US8734134B2 (en) 2014-05-27
US20090041600A1 (en) 2009-02-12

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